Sluggish srx 700 ?????

Y

Yamaman700srx

New member
Joined
Feb 14, 2013
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25
Location
Canada
I am having problems with my stock 1998 srx 700 with the plug on the pto side running a little rich I had the pv's cleaned and crabs cleaned twice now and checked by a professional with only a little bit of a difference. The other problem I am having is that the sled doesn't respond very well when you start from a standing point to full out go it seems sluggish tops out at 140 to 150 km,s but if you are doing say 80km's and punch it it seems to pull well and gets up in the kms higher like 180kph at times not always???? has anyone else had this happen ...I should mention here that my buddy has a stock sxviper 700 and he will pull away from me all the time from a standing point but if he is beside me and I hit the throttle I will walk away most of the time you can just tell when the motor is just right and will respond. I'm lost ??? hope someone can help on here.
Thanks.
 
Sounds like a clutching issue.

-try a new belt
-adjust belt tension
-check clutch alignment
-check for broken motor mounts
-check buttons on secondary clutch

When sleds get some miles on them the clutch components sometimes all get worn to the point that you get problems like this because of too much friction or jamming of clutches...you may have to completely go through both your clutches and replace all worn items...bushings, rollers, buttons, weight bushings, springs ect.
 
If that dont pan out I would be checking out the power valves. Pull threw/misadjusted/stuck & DIRTY would cause this with no fault code displayed. Rub threw/bad servo motor will throw 7 flashes.
 
Thanks side show that's what I was wondering if the clutches were going I guess I should give them a good going over I was hoping they were ok but I guess that's better then motor problems. I will go over them and let everyone no what happens. Thanks for the reply Devilin I have cleaned and adjusted my power valves early in the winter I did have a pull threw on the pto side so I got a replacement and I adjusted them up like the one guy on here said to do with a 2.5mm gap at the housing with the servo open so I think we should be good there unless the servo is not functioning right but I am not getting any flashing on the dash other then the three at start up. Thanks guys for your info
 
Ok well I checked the clutches and cleaned them I also changed the stock weights from 8dn 00 to 8dn 20 to see if that helped I must say I got better pull but still no improvement on the (wot) bog I also changed the secondary from 3/3 to 2/6 with no change on the (wot )bog. I was looking on here tonight and noticed that a member with a viper is having the same problem and it was mentioned that the tps might be the issue is it possible that this is wrong with mine? I am not sure but I don't think it's hooked up the wires are joined together from the sensor is that possible and if so would it run at all I'm new to this sled and not sure what should be where. Thanks for the help so far guys.
 
Yamaman700srx said:
Ok well I checked the clutches and cleaned them I also changed the stock weights from 8dn 00 to 8dn 20 to see if that helped I must say I got better pull but still no improvement on the (wot) bog I also changed the secondary from 3/3 to 2/6 with no change on the (wot )bog. I was looking on here tonight and noticed that a member with a viper is having the same problem and it was mentioned that the tps might be the issue is it possible that this is wrong with mine? I am not sure but I don't think it's hooked up the wires are joined together from the sensor is that possible and if so would it run at all I'm new to this sled and not sure what should be where. Thanks for the help so far guys.
Click to expand...

As far as I know you cant plug TPS back into itself. I think your thinking about TORS. TPS= Throttle Position Sensor, TORS= Throttle OverRide System.
 
Yamaman, I'm the guy with the lame viper. Hopefully Sideshow will respond back because he's the TPS guru on this site although I don't mean to take away from other members who know a lot about this issue also. Sideshow contributed some great info in some of the past strings relating to tps. Well worth searching for some of his past posts.

I do know your machine will run without the TPS plugged in. It's using the magneto for timing. However, from my limited knowledge it seems like the TPS fine tunes the ignition and may even lend some input to the power valves but I'm not 100% sure on the latter. I also noticed that after I "adjusted" my TPS it seems to idle a lot better and I'm keeping my fingers crossed for Saturday.

best of luck
 
OldIron said:
Yamaman, I'm the guy with the lame viper. Hopefully Sideshow will respond back because he's the TPS guru on this site although I don't mean to take away from other members who know a lot about this issue also. Sideshow contributed some great info in some of the past strings relating to tps. Well worth searching for some of his past posts.

I do know your machine will run without the TPS plugged in. It's using the magneto for timing. However, from my limited knowledge it seems like the TPS fine tunes the ignition and may even lend some input to the power valves but I'm not 100% sure on the latter. I also noticed that after I "adjusted" my TPS it seems to idle a lot better and I'm keeping my fingers crossed for Saturday.

best of luck
Click to expand...


X2. I know it advances/retards timing based on RPM/throttleposition but dont know the specifics.
 
u can try to unplug the front light and test back to see if its not related to stator ....I would put 3 new spark plug caps from 00-up srx
 
what is your primary spring with the 8dn-20 ??? secondary should be wrap at 70 ...is it a stock secondary helix ??tell uss more about the rpm ...does it goes right up to 8500 and stay there ???
 
Ok so looking at this and a manual I see that mod srx is right so I guess devilin is right it is the TORS that is plugged in to its self. Would that cause anything to make a bog? The only other thing I can see is the mag I do get a slight light flicker when I hit the brakes in the head light but it is just a second only everything else works still hand and thumb warmers??? I'm lost here guess I'm going to have to load it up and take it to the dealer. Thanks guys for your input hopefully someone can think of something before I take it in. I will post what is found once I go to the dealer.
 
Sorry modsrx I didn't see your post till now as far as I no it is a stock spring and helix as for the rpm's yes it holds at I'd say 8400 to 8500 the 80 twist I set it at didn't do anything that I can see from a 60 twist ????not at this point since it bogs and tops out at 140kms other then,let's me coast better when i let off the throttle. That's about it ?? Oh and the clutch kicks in now at 3900rpm's
 
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if u unplug the tors and still same it will not be your problem ......did u try a new belt ???u should get a look at those wire under the engine they all had trouble with that rubbing everywhere ..by the way if u think its a coil u can criss cross those spark plug wire ...they have no specific place to go in those years ......where are u in canada ?
 
Hey modsrx I am in southwestern Ontario near Kitchener. I haven't tried anything with the wiring it's not my thing but all I know is the motor was rebuilt about 2500 Kms ago I would have figured and hope the guy checked the wires under the motor then but I could be wrong. Not sure really what to look for now do you think that the little bit of light flicker I get when I apply the brakes is a bad thing? is that a sign my stater is going or just a normal thing for that year of sled? After reading old irons Viper problem I can say that my SR X is doing almost the same just not having the RPM problem at three-quarter throttle and under it pulls fine at wide open throttle it bogs?
 
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don't think its bad but like i said u can try to unhook the front light and make a ride test ...i think its close to toronto ???...if its not your thing u will need to start digging in it or find a friend who work on them
 
Ya I am about two hours west of Toronto but close enough I guess I will have to start digging in to the manual little more I will try unplugging the light and taking it for a ride and see what happens thanks for your info
 
It does seem like it's a clutching problem. However, one thing I was pondering is what would happen if your main jets were too rich? If that was the case I would expect degraded performance from the beginning on up when you hit the throttle hard from a stop. However if you accelerated moderately, I wouldn't expect degraded performance until the top end.

I know your carbs are clean but do you know what you have in there? Meaning do you know your main jet, pilot jet, pilot needle and fuel screw settings? That's an inexpensive possibility to rule out. However you would need to pull your carbs off and go thru them, write them all down then post them here or compare them to a chart.

Just a thought and I don't own an SRX so maybe someone know's better than I and could dismiss my idea as a wast of time.
 
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The #1 plug is a little black not bad black has some chocolate brown to it but the 2 and 3rd are great nice and brown I'll post a pic tomorrow if I can on here. As for the carbs I took them to a guy that did works for yamaha and he went threw them the only thing he said I should replace next year is the the main needle that come up in the middle of the carb sorry I forget what he called it but all three should be done he says. Is that why I could get this dreaded bog???
 
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